US880859A - Leather blackening and seasoning machine. - Google Patents

Description

No. 880,859. PATENTED MAR. 3, I908.

. O. P. BOSSERT.

LEATHER BLAGKENING AND SEASONING MACHINE.

APPLICATION FILED APR.11, 1907.

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PATENTED MAR. 3, 1908. P. BOSSERT.

LEATHER BLAGKENING AND SBASONING MACHINE.

APPLICATION FILED .APR.11, 1907.

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' PATENTED MAR. 3, 1908, 0. P. BOSSERT. LEATHER BLAOKBNING AND SEASONING MACHINE.

APPLICATION FILED APR. 11, 1907.

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LEATHER BLAGKENING AND SEASONING MACHINE.

APPLIOATION FILED APE.11, 1907.

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UNITED STATES A @FFIQE.

CHARLES P. BOSSERT, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO PFISTER & VOGEL LEATHER COMPANY.

LEATHER BLAGKENING AND SEASONING MACHINE.

Specification of Letters Patent.

Patented March 3, 1908.

Application filed April 11 1907. Serial No. 367.501.

To all whom it may concern:

Be it known that I, CHARLES P. BOSSERT, of Milwaukee, WVisconsin, have invented a Leather Blackening and Seasoning Machine, of which the following is a specification.

This invention consists of a machine for treating leather in those processes which require the application to the surface thereof of a liquid or fluid composition; more particularly in blackening, seasoning and washing the leather.

My invention has relation to that type of machine wherein the leather is passed through the machine on the surface of a rotating carrying-roll, against which pass a set of brushes which are supplied with a liquid or fluid composition which is to be applied to the surface of the leather. In this operation, the leather being of irregular shape naturally covers only a portion of the surface of the carrying-roll, and the balance of its surface therefore becomes smeared with the composition from the brushes, and if not removed would become likewise smeared upon the under side of the next side of leather passed through the machine, which under side is not to be treated with the composition. It is therefore necessary in these machines to apply wiping devices to the surface of the carrying-roll at a point in advance of that of which the sides of leather are laid upon it, so as to remove all of the composition smeared upon the roll in connection with treating one piece of leather, before the next piece is passed through. To effect this operation a bar extending the entire length of the roll and having a rubber plate projecting edgewise therefrom against the roll was employed, but the operation of this device was very defective. It has been found impossible to so adjust the rubber as to press at all points upon the roll with equal force, so that even when very great pressure was used some of the composition passed by the wiper and was left lying in streaks upon the carrying-roll. This was due not simply to the lack of perfectly uniform pressure at all points of the wiper, as well as to the uneven and possibly not truly circular surface of the roll, but also and especially to the fact that no means were provided for carrying away the excess of composition removed by the wiper, and it therefore collected in considerable quantities on the forward edge of the wiper and was necessarily forced through.

The result has been not simply that the wiping action was very defective, but also that a large amount of power was used and considerable wear incurred by the excessive pressure which it was necessary to use with the wiper against the roll.

It is the main object of the present invention to eliminate these difliculties by providing novel wiping devices which with a minimum of pressure against the roll shall completely remove all adhering material therefrom, and further convey away all the wipedoff material as fast as it is removed from the surface of the roll and prevent it from accumulating at the edge of the wiper.

In my new machine I dispense with the old wiper-bar carrying a single continuous wiper, and provide instead thereof a wipershaft on which are mounted a plurality of small individual wipers which act upon a small section only of the length of the roll, and each wiper is individually mounted on the shaft and is pressed against the carryingroll with a resilient or spring pressure which is individually adjustable so as to secure the exact pressure needed upon that particular section of the roll length. The individual wipers overlap one another, and each is made concave on the advance side whereby it tends to collect all the material wiped from the roll at the center of the Wiper, at which point it runs down the wiper-shank and drips into a pan or other receptacle provided for that purpose.

In the most improved form of the machine I also provide the wiper-sh aft itself with adj usting means whereby all the wipers together may be pressed against the carrying-roll by oscillating the shaft, or on the other hand when the shaft is released it can be turned so that all of the wipers are thrown back into a position in which they can be cleaned.

My invention will be best understood from a consideration of the accompanying descrip tion and drawings of one embodiment thereof.

In these drawings, Figure 1 is a left side elevation of the complete machine, Fig. 2 is a front elevation of the machine, the feeding-in table being removed to better illustrate the remaining parts, Fig. 3 is a central transverse section of the machine, Fig. 4 is a longitudinal central section through one of the wipers, Fig. 5 is a perspective view of the spring abutment for one of the wipers, Fig. 6 is a perspective View of one of the wipers,

Fig. 7 is a perspective view of the screw-pin used in connection with the wipers, Fig. 8 is a plan view of one of the rubbers.

In these drawings every reference letter and numeral refers always to the same part.

The frame of the machine is made up of two end frames 11, two longitudinal X.- shaped members 12 and 13 connecting them, and a longitudinal bolting rod 14 at the top also connecting the frames. On the end. frames 1.1 are mounted bearings 15 in which is j ournaled the main driving-shaft 16 carrying fast and loose pulleys 17 and 18 by which it is driven, and other pulleys 19 and 20 which serve to drive the operative parts of the machine. The left-hand end. of the shaft 16 in Fig. 2 is shown as broken away in Fig. 2 as it would ordinarily be supported by an outboard bearing or pedestal, which is also omitted from Fig. 1 as it would obscure the other parts.

A leather-carrying roll consisting of a large drum 21, ordinarily surfaced with copper, is supported on a shaft or aXle 22, which is journaled in bearings 23 mounted on the end-frames 1.1, and the right-hand end of the shaft 22 carries a large gear-wheel 24. The gearwheel 24 meshes with a pinion 25 formed on a short sleeve 26 which turns on a stubshaft 26 on the frame 11 and carries a pullev 27 this latter being connected by a belt 28 with the pulley 20, by which it is driven. The belt 28 is held up to the proper tightness by means of a tightener pulley 29 mounted on the end of a pivoted arm 30 j ournaled on a pin 31 on the frame 11, the pulley 29 resting against the belt 28 by gravity, which is assisted by the tension of a coiled spring 32 in connection with the arm 30 as clearly shown in Fig. 3, which spring has its lower end passing through a hole in a bracket-lug 33 of the frame 11 and threaded for the application of a nut 34, whereby the tension of the spring is adjusted. Above the carrying roll 21 are -mounted two rotary brushes 35, 36, which are provided with gudgeons 37 journaled in bearing-blocks 38, which latter slide vertically in slots 39 provided in posts 40, the bearing-blocks 38 being adjustable by means of screws 41 having capstan heads 42, and

the bearing-blocks are clamped in their adjusted position by means of clamping nuts 43. This adjustment is desirable to give the brushes 35, 36 the required pressure upon the surface of the leather and provide for wear of the surface of the brushes. At the left-hand end the gudgeons 37 are extended beyond the bearing-blocks 38 and carry over-hung pulleys 44, which are connected with the driving pulley 19 by means of a belt 45. To secure the necessary are of contact of the belt 45 upon the pulleys 44 and also for tightening the belt, the latter passes around a tightener pulley 46 which is mounted upon a stubshaft 47, this latter being formed on a block 48, which slides in an upright slot 49 in the end-frame and the block 48 is drawn downwardly to tighten the belt by means of an adjusting-screw 50 which is provided with a capstan head 51.

The liquid or composition to be applied to the leather is contained in a pan or reservoir 52 and delivered therefrom to the brush 35 by means of an intermediary feed-roll 53. This liquid feed-roll is given a slow rotative motion by the means hereinafter described, in the direction of the arrow (Fig. 1) and dipping into the pan 52 becomes covered with the composition or liquid, which is thereby conveyed to the brush 35, the latter wiping off said liquid and throwing it in a spray upon the surface of the leather, subsequently to which the leather passes under the brush and the composition is then rubbed in or distributed. thereby upon the surface of the leather. The roll 53 is provided with gudgeons 54 journaled in bearing-blocks 55 which slide longitudinally upon a bracket 56 projecting from the upper part of the endframe 1].. As in the case of the other bearings previously described the bearing-blocks 55 are adjustable forwardly and backwardly by means of a capstan-headed screw 57 and are clamped in their adjusted position by nuts 58. The pan or reservoir 52 is secured upon lateral ears 59 formed on the slidingblocks 55, and thereby moves forward and back with the feed-roll 53. The right-hand gudgeon 54 is also extended and has mounted thereon a sprocket-wheel 60 connected by a chain 61 with a sprocket-wheel 62 on the end of the axle 22, thereby giving a slow motion to the feed-roll from the shaft of the carrying-roll.

To prevent undue spattering of the composition I may provide a shield or cover 63 which is mounted on the bolt-rod 14 and covers the brushes 35, 36; the rear side of said cover having a trough 64 formed thereon which is to catch and hold such composition as may be thrown upon the cover by the brush 36.

A wooden apron or table 65 is provided at the infeed or front of the machine, this apron or table being supported by brackets 66 and having preferably at its front edge a roller 67 for greater ease in manipulating the leather. Immediately below this apron or table are mounted wipers 68 which, as heretofore remarked, constitute one of the most important elements of my invention. These wipers are mounted upon the wipershaft 69 which is journaled in bearing lugs 70 in the end-frames 11. these wipers are so arranged that their ends overlap each other whereby any possible streak of material left by the right-hand end of one wiper is taken up and removed by the lefthand end of the adjacent wiper.

Each wiper comprises a sleeve 7 1. turning As shown clearly in Fig. 2

loosely on the shaft 69; an upright arm 7 2,

and a curved flange 73 transverse to the arm 72 andv having a general direction parallel to the axis of the carrying-roll 21, but yet having a curvature such as to present a concave surface from below. To the flange 73 is secured a rubber 74, which is preferably made from a piece of rubber sheeting of the shape shown in Fig. 8, the active edge 75 thereof being so shaped as to conform to the surface of the roll 21 at all points, as clearly shown in Fig. 4. This rubber is secured to the flange 73 by means of a curved plate 76 overlying the rubber, and screws 77. The means for pressing the wiper 68 against the roll 21 consist of a screw-pin 78, one end 79 of which is threaded into a hole 80 in the wiper 68; a coiled compression spring 81 surrounding said pin and abutting at one end upon a flange-collar 82 thereof; and an abutment piece 83 for the opposite end of the spring 81, said abutment piece comprising a sleeve 84 fitting on the shaft 69, an upright arm 85 having a notch 86 at its upper end to receive the screw-pin 78, and a set-screw 37 mounted in a threaded boss 88, whereby the abutment piece 83 is clamped in any position upon the shaft 69. A washer 89 is provided between the end of the spring 8] and the slotted end of the abutment piece 83. It will be seen that the spring 8], reacting against the abutment piece 83, gives a resilient pressure against the drum 21 to the end of the wiper 68. This pressure may be adjusted in two ways, that is, either by rotating the abutment piece 83 upon the shaft 69 (after loosening the set-screw S7) or secondly, by turning the screw-pin 7 8 in the threaded hole 80, which is done by means of the projecting squared ends 90 formed on the screwpins, and this latter means of adjustment is employed to obtain the exact desired pressure after the latter has been roughly fixed by properly positioning the abutment piece.

As the surface of the drum 21 moves upwardly toward the concave surface of the rubber 74, the material spread thereupon is wiped ofl and carried toward the center of the rubber, at which point it collects upon and flows down the arm 72 of the wiper.

To prevent possible endwise movement of the wipers there is provided for those which are intermediate and have no other lateral abutment a thrust-collar 91 secured in place upon the shaft 69 by a set-screw 92. The abutment piece 83 at the left-hand end is necessarily placed on the opposite side of its wiper 68 from the abutment pieces of the other wipers, and therefore has its arm 85 bent in the opposite direction.

The arrangement as thus far described provides for the individual adjustment of each wiper, whereby a full and uniform pressure may be obtained at all points of the drum, but I also may provide for the adjustment of the wipers as a whole, and this arrangement consists of an arm 93 at one end of the wiper-shaft (see Fig. 1) or if desired, a pair of arms at its opposite ends. The arm or arms 93 have a ring-collar 94 which fits over the projecting end of the shaft 69 and is fixed thereto by means of a diametral pin 95 which passes through a hole in both. The free end of the arm 93 is perforated by a hole through which passes a screw-rod 96, the screwed end of which passes through a hole in the front edge of the end-frame 11 and has mounted thereon a hand-nut 97. It is obvious that by rotating the hand-nut 97 the arm 93 is moved forward or back and the shaft 69 oscillated so that all the wipers in unison are moved toward and from the carrying-drum as may be desired. If desired to clean the wipers, the hand-nut 97 is loosened sufficiently to enable the pin 95 to be withdrawn, whereupon the wipers as a whole may be thrown back so as to present their active edges in front, and after the cleaning operation they are readily replaced in position, the pin 95 being reinserted in place.

While I herein describe the most improved form of my invention, the latter is not necessarily confined to all the improvements or to the exact form described, as it is obvious that the form and arrangement of the parts i may be varied to some extent without departing from the principle of my invention, and I wish it understood therefore that my invention includes all such modifications or variations so far as they lie within the scope of my claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The combination of a rotating carry ing-drum, means for distributing a fluid composition upon the surface thereof or of a sheet of material carried thereby, a shaft parallel and adjacent to said drum, a wiper rotatably mounted on said shaft, an abut ment fixed on said shaft, and a spring compressed between said abutment and said wiper and pressing the latter resiliently against said drum.

2. The combination of a rotating carryingdrum, means for distributing a fluid composition upon the surface of said drum or of a sheet of material carried thereby, a shaft parallel and adjacent to said drum, a wiper pivotally mounted on said shaft, an abutment rotatable upon said shaft, means for clamping said abutment in any position on said shaft, and a compression spring between said abutment and said wiper whereby the latter is pressed against said drum.

3. The combination of a rotating carryingdrum, means for distributing a fluid composition upon the surface of said drum or of the sheet of material carried thereby, a shaft parallel and adjacent to said drum, a wiper pivotally mounted on said shaft, an abutment rotatable upon said shaft, means for clamping said abutment in any position on said shaft, a compressed spring between said abutment and said wiper whereby the latter is pressed against said drum, and means for separately adjusting the compressive force of said spring.

4. The combination of a rotating carryingdrum, means for distributing a fluid composition upon the surface of said drum or of a sheet of material carried thereby, a shaft parallel and adjacent to said drum, awiper pivotally mounted on said shaft, an abutment rotatable upon said shaft means for clamping said abutment in any position on said shaft, a compressed spring between said abutment and said wiper whereby the latter is pressed against said drum, a screw-pin threaded into one of said members between which the spring acts and having an abutment for one end of said spring, and means for rotating said pin whereby the force of said spring is varied.

5. In combination with a rotary drum, meansfor removing a coating of liquid or composition from the surface thereof comprising a curved member pressing against the surface of said drum, the curvature of said member being such as to present a concave collecting surface to the advancing part of the surface of said drum.

6. In combination with a rotary drum, a wiper adapted to remove a liquid or fluid composition from the surface thereof comprising a curved plate set edgewise to the surface of said drum and having its curvature concave to the advancing part of the surface whereby to collect at an intermediate point of said wiper a liquid or composition removed from the surface of said drum, and means for pressing said wiper against the drum.

7. In combination with a rotary drum, a shaft mounted adjacent and parallel thereto, and a wiper pivotally mounted on said shaft and having a curved active edge pressing upon the surface of said drum and set to trail thereon at a distance behind said shaft, said active edge having a curvature face is caused to collect at an intermediate point of said edge, and means for pressing said wiper against the surface of said drum.

8. In combination with a rotary drum, a plurality of individual wipers adapted to remove a liquid or fluid composition from the surface of said drum, said wipers being arranged in series each slightly overlapping the adjacent one and each acting upon a portion of the length of said'drum.

9. In combination with a rotary drum,

means for removing a liquid or fluid composition from the surface thereof, said means comprising a plurality of individual Wipers arranged in series each acting on a portion of the length of said drum and slightly over lapping, and means for resiliently pressing said wipers against said drum.

10. In combination with a rotary drum, means for removing a liquid or fluid composition from the surface thereof, said means comprising a plurality of individual wipers each acting on a separate portion of the length of said drum and collecting a composition therefrom, each wiper consisting of a curved surface concave to the advancing surface of the drum, whereby all of said composition removed by the wiper is collected at an intermediate point of the surface thereof.

11. The combination of a rotary drum and means for removing a liquid or fluid composition from the surface thereof, said means comprising a plurality of individual wipers arranged in a series along the length of said drum, each wiper acting on its separate portion of the length of said drum and having an active edge which presents a concave surface to the advancing surface of the drum, and means for resiliently pressing each of said wipers individually against said drum.

12. The combination of a rotary drum and means for removing a liquid or fluid composition from the surface thereof, said means comprising a plurality of individual wipers arranged in a series along the length of said drum, each wiper acting on its separate portion of the length of said drum and having an active edge which presents a concave surface to the advancing surface of the drum, a plurality of springs acting resiliently upon the several respective wipers to press them against the surface of said drum, and means for adjusting the individual pressure of the several springs.

13 The combination of a rotary drum and means for removing a liquid or fluid composition from the surface thereof, said means comprising a plurality of individual wipers arranged in a series along the length of said drum, each wiper acting on its separate portion of the length of said drum and having an active edge which presents a concave surface to the advancing surface of the drum, means for resiliently pressing each of said wipers individually against the drum, and means for simultaneously acting on all said wipers to press them against or remove them from said drum.

14. In combination with a rotary drum, means for removing a liquid or fluid composition from the surface thereof, said means comprising a shaft mounted parallel and adjacent to said drum, a plurality of individual wipers pivotally mounted on said shaft and each having an active edge trailing behind said shaft upon the surface of I said drum, and means for rotating said shaft whereby all of said wipers are simultaneously moved towards or from said drum,

15. In combination with a rotary drum. means for removing a liquid or fluid com. position from the surface thereof, said means comprising a shaft mounted parallel and adjacent to said drum, a plurality of wipers pivotally mounted on said shaft and having an active edge trailing behind said shaft against the surface of said drum, resilient means between said shaft and said wipers, and means for partially rotating said shaft.

16. In combination with a rotary shaft, means for removing a liquid or fluid composition from the surface thereof, said means comprising a shaft mounted parallel and adjacent to said drum, a plurality of individual wipers mounted on said shaft and each acting on a separate portion of the length of said drum, each of said wipers having an active edge trailing behind said shaft upon the surface of said drum, a plurality of spring-abutments adjustably secured to said shaft, a plurality of springs acting between said abutments and said wipers, and means-for partially rotating said shaft whereby said wipers are pressed toward or removed from said drum as a whole.

17. In combination with a rotary drum, means for removing a liquid or fluid composition from the surface thereof, said means comprising a shaft mounted parallel and adjacent to said drum, a plurality of wipers pivotally mounted on said shaft and having an active edge trailing behind said shaft against the surface of said drum, resilient means between said shaft and said wipers, and means for partially rotating said shaft; each of said wipers having a curved surface concave to the advancing portions of said drum, whereby the liquid or composition removed by the wiper collects at an'intermediate point of the active edge of said Wiper.

18. In combination with a rotary drum, means for removing a liquid or fluid composition from the surface thereof, said means comprising a shaft mounted parallel and adj acent to said drum, an arm mounted on said shaft, means connected with the end of said arm for adjustably moving it through a certain angle whereby the position of said shaft is varied or adj usted, a plurality of individual wipers pivotally mounted on said shaft and each having an active edge trailing behind said shaft against the surface of said drum, each wiper acting upon its individual portion of the length of said drum, and said wipers slightly overlapping, a plurality of abutments mounted on said shaft adjacent to the several wipers, and a plurality of springs between said abutments and said wipers.

19. In combination with a rotary drum,

means for removing a liquid or fluid composition from the surface thereof, said means comprising a shaft mounted parallel and adj acent to said drum, an arm mounted on said shaft, means connected with the end of said arm for adjustably moving it through a certain angle whereby the position of said shaft is varied or adjusted, a plurality of individual wipers pivotally mounted on said shaft and each having an active edge trailing behind said shaft against the surface of said drum, each wiper acting upon its individual portion of the length of said drum, and said wipers slightly overlapping, a plurality of abutments mounted on said shaft adjacent to the several wipers, a plurality of springs between said abutments and said wipers, and means for adjusting the pressure of the individual springs separately.

20. In combination with a rotary drum, means for removing a liquid or fluid composition from the surface thereof, said means comprising a shaft mounted parallel and ad j acent to said drum, an arm mounted on said shaft, means connected with the end of said arm for adjustably moving it through a certain angle whereby the position of said shaft is varied or adjusted, a plurality of individual wipers pivotally mounted on said shaft and each having an active edge trailing behind said shaft against the surface of said drum, each wiper acting upon its individual portion of the length of said drum, and said wipers slightly overlapping, a plurality of abutments mounted. on said. shaft adjacent to the several wipers, a plurality of springs between said abutments and said wipers, means for adjusting the pressure of the individual springs separately, and means for adjusting the angular position of said abutments upon 105 said shaft,

21. In combination with a rotary drum, means for removing a li uid or fluid com position from the surface t iereof, said means comprising a shaft mounted parallel and ad- 110 jacent to said drum, an arm mounted on said shaft, means connected with the end of said arm for adjustably moving it through a certain angle whereby the position'of said shaft is varied or adjusted, a plurality of individual 115 wipers pivotally mounted on said shaft and each having an active edge trailing behind said. shaft against the surface of said drum, each wiper acting upon its individual portion of the length of said drum and said wipers 120 slightly overlapping, a plurality of abutments mounted on said shaft adjacent to the several Wipers, and a plurality of springs be tween said abutments and said wipers, and a plurality of screw-pins having flanges acting 125 as abutments for one end of said springs, said springs being coiled about said screwpins, and the latter being threaded into the part to which they are aflixed whereby the pressure of said springs is individually varied. 130

22. In combination with a rotary drum, caused to move toward the center or the means for removing a liquid or fluid cornhighest portion of said wiper by the oblique position from the surface thereof, said means pressure of the material behind it, and then comprisingacurved wiper pressing upon the flows down the surface of said wiper by 15 under surface of said drum on the rising side gravity. of said surface, the rising or Wiping side of In witness whereof, Ihave hereunto set my said wiper being concave to the advancing hand this fourth day of April, 1907. surface of the drum and set radially and so CHARLES P. BOSSERT. in a downwardly sloping direction, whereby In presence of said liquid or composition after being col- G. W. LUEBBEN, looted by the active edge of said wiper is first C. MAIRD.

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